2 days ago my 7 yr. Old daughter started feeling sick fever started then vomiting and she complained of a soar throat so I pushed fluids and gave Tylenol for fever today she is feeling a little better but does not want to try any food. She went to the bathroom and had a bowl movement in the stool were tiny white looking worm things what is this and could this be the reason she has been feeling so sick

A lot depends on where in the world you live.
Yes, they could be worms/parasites.
Save a sample and take it (and your daughter) to a clinic.
Not eating for now is a good idea. Clear broth and clear, room temperature juices (watered down a lot) only.

She needs to be seen by a real doctor immediately! Doesn't matter where in the world you are.

Take her to the doctor now. If you can take a stool sample, that's great. If you can't, that's okay too.

In much of the world, small thread-like white things in the stool are pinworms/threadworms.
Treatment might be a drug, but the entire household must be treated, so if you don't want to take the drugs, get the instructions for cleaning the entire house and everything in it.
You really should do that anyway, because they can survive quite a while outside of the intestine.
Pets don't need treatment but could have some on the fur from petting.